Shuttle



Alsril 12, 1927.

- P. L. SPENCER Y SHUTTLE Filed July 1o, 1925 3; Figs. 3 and 4 being shown on an Aenlarged Patented Apr. 12, 192.7.

UNITED. STATES PATENT foFFlcE.

PHILIP I.. srENcER, or MILLBURY, MAssAOHUsEr'IsAss-IGNOR rro J. H. WILLIAMS COMPANY, or UTIOA, NEW YORK, A CORPORATION OF NEW YORK.

SHUTTLE.

. Application filed July 10, 1825. Serial No. 42,751.

The lpresent invention relates to an improvement in shuttles.

In shilttles for fine filling, the ordinary construction of eye does not afford suiicient resistance to the passage of the yarn to secure the laying of the yarn properly in the shed. The object of the invention is to improve the thread block of the shuttle to provide a tension for the yarn of such character and construction as. to apply the requisite drag to the thread and at the same time to avoid the possibility of-entanglement of the yarn in the tension.

The invention consists in the shuttle herel inafter described and the claim.

In the accompanying drawings illustrating the preferred form of the invention, Fig. 1 1s a plan of the delivery end of a weft replenishing shuttle showing the thread block in position; Fig. 2 is a front elevation of the same; Fig. 3 is a longitudinal sectional elevation of the thread block; and Fig. 4 is a transverse sectional elevation of the thread block taken on the line 4 4, .F1g.

particularly delined` in scale.

The shuttle is described as follows: 'Ihe usual shuttle body 10 has a bobbin opening 11 and tip 12. The thread block 13 is mounted in the shuttle body at the delivery end of the shuttle, the thread being drawn from the bobbin 14 and passing through the passageways of the thread'block and being delivered at thedelivery eye 15. The threa block, aside from the features `hereinafter referred to, is lof the ordinary construction. It is the usual thread passage 16, the beak 17 and horn 18. In the middle of the thread passage is provided the tension device ind: cated in a general way by the reference character 20. This tension device consists of two members 21 and 22 having their" lowery ends rovided with holes to receive the pin 23. is pin 23 is mounted in the tension carrier 24 which is screw threaded and received in the screw threaded hole in the bottom of the thread block. The ten-sion carrier 24 is necked down at its upper end to form a collar or annulus diametrlically'through which the pin 23 is passed. The tension members 21 and 22 are received in the central hole 25 of the tension carrier 24. The upperends of the tension members 21 and the sides of the thread l will be held in passage 164 to receive them. The tension members 21 and 22 are pressed toward each other by means of a plunger 27 and spring 28 received in a hole in the end of the spring screw 29. This spring screw 29 is screw threaded through theside of the shuttle body and shuttle block and acts as a carrier for the tension spring 28 and also as a means of adjustment of the pressure applied by the spring 28 to the tension members 21 and 22.

The tension members press against the yarn passing throughthe passageway with spring pressure to cause a drag Or tension to be exerted upon the thread being laid in the shed by lthe shuttle. By turning the tension spring carrier 29 with a screw-driver, the desired amount of tension on the thread may be secured.

In order to replace broken tension members or worn ones, the tension spring carrier 29 and its spring 28 are removed from the shuttle 'and then the operative unscrews the tension carrier 24'byy means of a screwdriver,v its body being provided with a nick to receive the end of the screw-driver and a new tension member may then be screwed into place. It will be screwed in to the proper depth to position the tension members correctly with^relation to the thread and it place by the friction between the tension carrier and the block in which it is supported. After a new tension is inserted in the shuttle, the tension spring and carrier are again inserted and screwed -up to the proper position to apply the desired tension to the yarn. It will be noted that `the thread block is locked in position in the shuttle by means of the tension spring carrier 29.

While the present invention has 1 been shown and described in connection with a weft replenis'hing shuttle it is to be understood that the invention is not necessarily limited to this particular type of shuttle but may be embodied in other types within the limits defined Yin the claim.

Having thus v.described the invention, what is claimed is:

Av shuttle for looms having, in combina' tion, a shuttle body having a large and a small opening intersectin each other at substantially right angles, a t read block located in the large opening and provided with a.

22 are received in recesses 26, 27, formed in `longitudinal thread passage and an inter- 1.

nelly threaded lateral opening re istering with the smaller opening in the bo y of the shuttle, u tension device comprising a carrier having two tension members supported 5 therein,` a screw having a pressure spring for applying spring pressure to thel tension, fitting 1n the lateral hole in the thread bock and in the smaller o ening in the shuttle body, serving to lock e thread block in the body and being adjustable to vary the ten- 10 

